# Gemini 4 Argon vs GPT-5.5 Instant

> Gemini 4 Argon is the stronger model overall, scoring 56.5 to 42.7 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-4-argon-vs-gpt-5-5-instant
- Last updated: 2026-10-12
- Shared benchmarks: 15

## Summary

- They share 15 benchmarks with published results for both. Gemini 4 Argon scores higher in 8 categories and GPT-5.5 Instant in 1 category; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Gemini 4 Argon leads 73.9 to 26.5.
- The biggest single-benchmark swing is CritPt: 27.1% for Gemini 4 Argon and 0% for GPT-5.5 Instant.

## Snapshot

| | Gemini 4 Argon | GPT-5.5 Instant |
|---|---|---|
| Provider | Google | OpenAI |
| Noometry Index | 56.5 | 42.7 |
| Rank | 24 | 110 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 4 Argon: 62.0 (#9)
- GPT-5.5 Instant: 44.3 (#74)

| Benchmark | Gemini 4 Argon | GPT-5.5 Instant |
|---|---|---|
| SciCode | 61.8% | 48.6% |
| LMArena Coding | 1550 | 1433 |
| LMArena WebDev | 1678 | — |
| FrontierSWE | 55% | — |

## Agentic & Tool Use

- Gemini 4 Argon: 49.2 (#8)
- GPT-5.5 Instant: —

| Benchmark | Gemini 4 Argon | GPT-5.5 Instant |
|---|---|---|
| APEX-Agents | 82.2% | — |
| Vending-Bench 2 | 13,718 | — |

## Reasoning

- Gemini 4 Argon: 44.2 (#47)
- GPT-5.5 Instant: 24.9 (#155)

| Benchmark | Gemini 4 Argon | GPT-5.5 Instant |
|---|---|---|
| CritPt | 27.1% | 0% |
| LMArena Hard Prompts | 1548 | 1426 |
| Chess Puzzles | — | 12% |
| Epoch Capabilities Index | — | 142.52 |

## Math

- Gemini 4 Argon: 73.9 (#17)
- GPT-5.5 Instant: 26.5 (#259)

| Benchmark | Gemini 4 Argon | GPT-5.5 Instant |
|---|---|---|
| LMArena Math | 1536 | 1420 |
| FrontierMath (Tiers 1-3) | — | 26.3% |
| FrontierMath Tier 4 | — | 2.4% |
| OTIS Mock AIME 2024-2025 | — | 68.1% |
| ProofBench | 99% | — |

## Knowledge

- Gemini 4 Argon: 43.9 (#89)
- GPT-5.5 Instant: 48.9 (#74)

| Benchmark | Gemini 4 Argon | GPT-5.5 Instant |
|---|---|---|
| LMArena Expert | 1553 | 1409 |
| GPQA Diamond | — | 82.5% |

## Multimodal

- Gemini 4 Argon: 46.5 (#14)
- GPT-5.5 Instant: 40.0 (#52)

| Benchmark | Gemini 4 Argon | GPT-5.5 Instant |
|---|---|---|
| LMArena Vision | — | 1250 |
| Blueprint-Bench 2 | 54.4% | — |
| LMArena Document | — | 1403 |

## Multilingual

- Gemini 4 Argon: 60.3 (#1)
- GPT-5.5 Instant: 52.8 (#80)

| Benchmark | Gemini 4 Argon | GPT-5.5 Instant |
|---|---|---|
| LMArena Non-English | 1523 | 1417 |
| LMArena Chinese | 1610 | 1456 |
| LMArena Russian | 1537 | 1431 |
| LMArena Spanish | 1497 | 1429 |
| LMArena French | — | 1428 |
| LMArena German | — | 1411 |
| LMArena Japanese | — | 1408 |
| LMArena Korean | — | 1392 |

## Instruction Following

- Gemini 4 Argon: 80.1 (#2)
- GPT-5.5 Instant: 74.2 (#100)

| Benchmark | Gemini 4 Argon | GPT-5.5 Instant |
|---|---|---|
| LMArena Instruction Following | 1538 | 1406 |

## Long Context

- Gemini 4 Argon: 47.6 (#15)
- GPT-5.5 Instant: 43.4 (#96)

| Benchmark | Gemini 4 Argon | GPT-5.5 Instant |
|---|---|---|
| LMArena Longer Query | 1549 | 1422 |

## Writing & Preference

- Gemini 4 Argon: 71.4 (#19)
- GPT-5.5 Instant: 61.8 (#85)

| Benchmark | Gemini 4 Argon | GPT-5.5 Instant |
|---|---|---|
| LMArena Text | 1534 | 1419 |
| LMArena Creative Writing | 1531 | 1419 |
| LMArena Multi-Turn | 1557 | 1433 |

## FAQ

### Is Gemini 4 Argon better than GPT-5.5 Instant?

Gemini 4 Argon is the stronger model overall, scoring 56.5 to 42.7 on the Noometry Index.

### Is Gemini 4 Argon or GPT-5.5 Instant better for coding?

Gemini 4 Argon scores higher on coding benchmarks: 62.0 versus 44.3 in the Noometry coding category.

### How many benchmarks do Gemini 4 Argon and GPT-5.5 Instant share?

15 benchmarks have published results for both models. Gemini 4 Argon has 21 scored results on Noometry and GPT-5.5 Instant has 27.